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LC-3 Instruction Set Architecture Quiz

Test your knowledge of the LC-3 Instruction Set Architecture with this engaging quiz! Dive into various questions covering memory addressing, instruction types, and more.

This quiz is designed for students and teachers who want to reinforce their understanding of computer architecture.

Multiple-choice format
Explore 15 challenging questions
Score as you go!

15 Questions4 MinutesCreated by CodingCheetah217

For an LC-3 instruction that uses the PC-Relative addressing mode, bits [15:9] of the address of the operand are the same as bits [15:9] of the address of the instruction.

True

False

Every LC-3 operate and data-movement instruction either reads from or writes into the register file in the LC-3 datapath.

True

False

. For which of the following LC-3 instructions is no memory access performed during the instruction cycle?

LDR

STI

LEA

For all of the above instructions memory is accessed during the instruction cycle.

Which of the following LC-3 instructions does not access memory to fetch its operand?

LDR

LDI

LEA

All of the above instructions access memory to fetch their operands.

. The LC-3 ADD instruction:

can only add two 16-bit values found in registers

can add a 16-bit value to a zero-extended 5-bit value

can add a 16-bit value to a sign-extended 5-bit value

can add a 16-bit value to a sign-extended 10-bit value

If the value stored in R0 is 1 at the end of the execution of the following instructions, what can be inferred about R5? Address Instruction ------- ------------------------ 0x3000 0101000000100000 0x3001 0101100101100001 0x3002 0000010000000001 0x3003 0001000000100001

R5 is odd

R5 is even

R5 is equal to 0

R5 is equal to 1

____________________ change the sequence of the instructions that are executed.

Control instructions

Data Movement

Operate

All of the above.

The number of system calls that could be uniquely identified using a trapvector of 12 bits would be ________

1024

2048

4096

5120

The LC-3 operate instructions that perform binary operations are (___________________.

ADD and NOT

ADD and AND

LD and ADD

BR and ADD

If an ISA has 256 opcodes, the number of bits in the instruction encoding used to specify the opcode should be at least___.

LC-3 Instruction Set Architecture Quiz

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